#
# This file is part of the PyRDP project.
# Copyright (C) 2018-2020 GoSecure Inc.
# Licensed under the GPLv3 or later.
#
from typing import List

from PySide2.QtCore import Qt, Signal
from PySide2.QtWidgets import QAction, QFileDialog, QInputDialog, QMainWindow, QTabWidget

from pyrdp.player import BaseTab
from pyrdp.player.LiveWindow import LiveWindow
from pyrdp.player.ReplayWindow import ReplayWindow


class MainWindow(QMainWindow):
    """
    Main window for the player application.
    """

    updateCountSignal = Signal()

    def __init__(self, bind_address: str, port: int, filesToRead: [str]):
        """
        :param bind_address: address to bind to when listening for live connections.
        :param port: port to bind to when listening for live connections.
        :param filesToRead: replay files to open.
        """
        super().__init__()

        # TODO : Rework into a class if we add more options later.
        self.options = {
            "focusNewTab": True,        # Useful whenever we are getting flooded with connections (or scanned), and we only want to monitor one at a time.
            "closeTabOnCtrlW": True     # Allow user to toggle Ctrl+W passthrough.
        }

        self.liveWindow = LiveWindow(bind_address, port, self.updateCountSignal, self.options, parent=self)
        self.replayWindow = ReplayWindow(self.options, parent=self)
        self.tabManager = QTabWidget()
        self.tabManager.addTab(self.liveWindow, "Live connections")
        self.tabManager.addTab(self.replayWindow, "Replays")
        self.setCentralWidget(self.tabManager)
        self.updateCountSignal.connect(self.updateTabConnectionCount)
        self.resizeObservers: List[BaseTab] = []

        # File menu
        openAction = QAction("Open...", self)
        openAction.setShortcut("Ctrl+O")
        openAction.setStatusTip("Open a replay file")
        openAction.triggered.connect(self.onOpenFile)

        # Command menu
        windowsRAction = QAction("Windows+R", self)
        windowsRAction.setShortcut("Ctrl+Alt+R")
        windowsRAction.setStatusTip("Send a Windows+R key sequence")
        windowsRAction.triggered.connect(lambda: self.sendKeySequence([Qt.Key.Key_Meta, Qt.Key.Key_R]))

        windowsLAction = QAction("Windows+L", self)
        windowsLAction.setShortcut("Ctrl+Alt+L")
        windowsLAction.setStatusTip("Send a Windows+L key sequence")
        windowsLAction.triggered.connect(lambda: self.sendKeySequence([Qt.Key.Key_Meta, Qt.Key.Key_L]))

        windowsEAction = QAction("Windows+E", self)
        windowsEAction.setShortcut("Ctrl+Alt+E")
        windowsEAction.setStatusTip("Send a Windows+E key sequence")
        windowsEAction.triggered.connect(lambda: self.sendKeySequence([Qt.Key.Key_Meta, Qt.Key.Key_E]))

        typeTextAction = QAction("Type text...", self)
        typeTextAction.setShortcut("Ctrl+Alt+T")
        typeTextAction.setStatusTip("Simulate typing on the keyboard")
        typeTextAction.triggered.connect(self.sendText)

        # Options menu
        focusTabAction = QAction("Focus new connections", self)
        focusTabAction.setCheckable(True)
        focusTabAction.setChecked(self.options.get("focusNewTab"))
        focusTabAction.triggered.connect(lambda: self.toggleFocusNewTab())

        closeTabOnCtrlW = QAction("Close current tab on Ctrl+W", self)
        closeTabOnCtrlW.setCheckable(True)
        closeTabOnCtrlW.setChecked(self.options.get("closeTabOnCtrlW"))
        closeTabOnCtrlW.triggered.connect(lambda: self.toggleCloseTabOnCtrlW())

        # Create menu
        menuBar = self.menuBar()

        fileMenu = menuBar.addMenu("File")
        fileMenu.addAction(openAction)

        commandMenu = menuBar.addMenu("Command")
        commandMenu.addAction(windowsRAction)
        commandMenu.addAction(windowsLAction)
        commandMenu.addAction(windowsEAction)
        commandMenu.addAction(typeTextAction)

        optionsMenu = menuBar.addMenu("Options")
        optionsMenu.addAction(focusTabAction)
        optionsMenu.addAction(closeTabOnCtrlW)

        # If there's only one replay, play it immediately.
        if len(filesToRead) == 1:
            self.tabManager.setCurrentWidget(self.replayWindow)
            self.replayWindow.openFile(filesToRead[0], autoplay=True)
        else:
            for f in filesToRead:
                self.replayWindow.openFile(f)

    def onOpenFile(self):
        fileNames, _ = QFileDialog.getOpenFileNames(self, "Open File(s)")

        if fileNames:
            self.tabManager.setCurrentWidget(self.replayWindow)
            for fileName in fileNames:
                self.replayWindow.openFile(fileName)

    def sendKeySequence(self, keys: [Qt.Key]):
        if self.tabManager.currentWidget() is self.liveWindow:
            self.liveWindow.sendKeySequence(keys)

    def sendText(self):
        if self.tabManager.currentWidget() is not self.liveWindow:
            return

        text, success = QInputDialog.getMultiLineText(self, "Type text...", "Text to type:")

        if not success:
            return

        self.liveWindow.sendText(text)

    def toggleFocusNewTab(self):
        self.options["focusNewTab"] = not self.options.get("focusNewTab")

    def toggleCloseTabOnCtrlW(self):
        self.options["closeTabOnCtrlW"] = not self.options.get("closeTabOnCtrlW")

    def updateTabConnectionCount(self):
        """
        Update the first tab (Live connections) with the current number of tabs
        """

        self.tabManager.setTabText(0, "Live connections (%d)" % self.liveWindow.count())
